Tifjngesellsciiaft fur anilin fabrikation



-- UNITED ST T-5E8;

tPazr-ENT OrF1eE.

PAUL hormone, or eossnrrz, SAXE-AL'PENBURG, 'Assrqnon 'ro THE AC- TinNcnsnnns'onAFT FUR ANILIN mmnnn'rum, or nnnmN, (murmur Q COMBINATION OF THE SALTS OF TETRAZO-DlPHENYL AND THE NAPHTH YLAMINES.'I

SPECIFICATION forming part of Letters Patent No. 365,667, dated June 28, 1887i Applicati n llh-d April 2-5, 1995 Serial No. W327i, (Nu sm'cimcns.)

Tooallwhom it may concern:

' Be it known that L-IAUL Bii'r'rlm-iu, a subject of the 'King of Saxony, Germany, residing at the city of Giissnitz, in the Duchy of I 5' SaXe-Altenburg, Germany, have invented a certaini'new and useful Combination of the for dyeing, whereas the substances obtained from'the sulpho-acids of both the naphthylamines can at once be employed as coloringmatters.

2b The above-named new substances are produced in the'followingzmanner:

First method-25.7 kilograms of chloride of benzidine or 28.2 of sulphate of benzidiue are well mixed with thirty kilograms of muriatic .2 acid of 209 Bauniand five hundred liters of water,- A solution of-13.8 kilograms of nitrite of sodium in one hundred and fifty liters of water is-' then added. The solution of the chloridejor sulphate of tetrazo-diphenyl-ob- '0 tained in this way is run into a solution of "36.5 kilograms of chloride of alpha or beta 'naphthylaminc intwo thousand liters of water.

The precipitate formed thereby is dried and converted by fuming.sulphuric acid (COllliiillh ing twenty per cent. ofanhydride) into its sulpho-aeids, the salts of which represent the 7 col ori rig-matters.

Second method.- lh "solution of the salts of tctrazo-diphenyl obtained in the above way isnnr'into a solution of fifty-five kilograms of T naphthionate of soda and twelve kilograms of acetate'of sodain one thousand liters of-water.

After having stood for about twelve hours the paste obtained is brought on a filter. The acid thus formed is converted into the sodium or ammonium salt, and represents the coloring-matter. I

jfhe process for making this red coloring-mattcris more especially set forth in a separate application for Letters Patent, filed N ovember 22, 1882, Serial No. 148,595, to which refer once is made.

' I claim The red dye-stuff or coloring-matter which results from the sulphonated combination of the salts of tetrazo-diphenyl and the naphthylamines, substantial] y as set forth.

In testimony whereof I have signcd my name to this specification in, the'presonce of two subscribing witnesses.

PAUL BOTTIGER. Witnesses: v

EDMUND D't'JRFFEL, ,R. HAUP'I. 

